.main-box {
  width: 100%;
  height: 100%;
  background-color: black;

}

.main-header {
  height: 50px;
  width: 100%;
  margin: 0;
  background-color: #FFFFFF;
}

.main-body {
  width: 100%;
  height: calc(100% -  50px);
  max-height: calc(100vh - 50px);
  background-color: black;
}


